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Inventories (Details) (USD $)
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Jan. 31, 2015
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Apr. 30, 2014
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| Inventory Disclosure [Abstract] | ||
| Raw materials | $ 1,637,739us-gaap_InventoryRawMaterials | $ 1,576,238us-gaap_InventoryRawMaterials |
| Work in process | 28,432us-gaap_InventoryWorkInProcess | 63,631us-gaap_InventoryWorkInProcess |
| Finished goods | 601,995us-gaap_InventoryFinishedGoods | 651,169us-gaap_InventoryFinishedGoods |
| Inventories | $ 2,268,166us-gaap_InventoryNet | $ 2,291,038us-gaap_InventoryNet |
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- Details
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- Definition
Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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